tweety

Senior Frontend Developer

# Wan Ting Zeng (Tweety)
**Senior Frontend Developer | Web3 & AI Integration Specialist**

**Core Expertise**: React.js, Next.js, JavaScript, TypeScript, Ethers.js, Web3.js, MetaMask/WalletConnect Integration, DEX, CEX, MCP (Model Context Protocol), RAG, LlamaIndex, Dify, Claude Code, AI, Docker, Python, GraphQL, Apollo, WebSocket, CI/CD, Jenkins, Monorepo, micro-frontend.

> Senior Frontend Developer with 7+ years of experience in building scalable Web3 payment systems and AI-integrated CI/CD tools. Expert in modern frontend architecture (Next.js Monorepo) and decentralized application (dApp) interaction.

- **Email**: [email protected]
- **Links**: [LinkedIn](https://www.linkedin.com/in/tweety817/) | [GitHub](https://github.com/tweety-777) | [Gist](https://gist.github.com/tweety-777) | [LeetCode](https://leetcode.com/tweety-777) | [Notion](https://tweety-dev.notion.site)
- **Location**: Remote / Taiwan

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## Technical Skills

- **Web3 & Fintech**: DEX (Decentralized Exchange), Ethers.js, Web3.js, WalletConnect/MetaMask Integration, GraphQL (Apollo), WebSocket, MQTT.
- **AI & Automation**: MCP (Model Context Protocol) Server, RAG Integration, LlamaIndex, Dify, Claude API, Python, Docker.
- **Core Frontend**: Next.js (App Router/Monorepo), React.js, Vue.js, TypeScript, JavaScript (ES6+), HTML5, SCSS.
- **Tools & DevOps**: CI/CD (Jenkins), Git (GitLab/Bitbucket), Webpack, SonarQube, Sentry, Jest.

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## Professional Experience

### Bitrue (Remote) | Senior Frontend Developer
*July 2024 – Present*

- **AI Code Review Tool**: Designed and implemented a containerized AI CR tool using Docker, LlamaIndex, Dify, and Claude to streamline CI/CD workflows.
- **MCP Server & RAG**: Developed a Python-based MCP (Model Context Protocol) server for GitLab/local agents and established a knowledge base using Dify for RAG-driven code analysis.
- **80% Efficiency Gain**: Improved code review efficiency by 80% and identified 20% more optimizable code via automated LLM prompts.
- **DEX Project**: Independently implemented copy trading and deposit/withdrawal modules for a decentralized exchange using GraphQL for optimized data fetching.
- **Localization**: Integrated Strapi with GPT-4o for one-step multi-language translation, reducing manual efforts by 80%.

### Gate.io (Remote) | Frontend Developer & Payment Team Owner
*July 2022 – April 2024*

- **Leadership**: Promoted to Payment Team Owner within one month for exceptional delivery and leadership in a solo frontend environment.
- **Web3 Cashier Project**: Developed a cryptocurrency payment gateway supporting MetaMask/WalletConnect via Ethers.js. Reduced payment processing time by 50% by abstracting transaction logic.
- **Architecture Migration**: Led the migration of the Gift Card project from a legacy React.js micro-frontend to a Next.js monorepo, achieving a 20% increase in Lighthouse performance scores.
- **Web Payment**: Implemented a passwordless low-risk payment feature, increasing user adoption by 80%.
- **Platform Development**: Developed GatePay landing pages, MiniApp, and a financial management backstage from scratch with micro-frontend.

### LH Network Service | Frontend Developer
*August 2021 – July 2022*

- Developed responsive financial trading platforms and corporate official websites using Next.js.
- Integrated real-time market data via WebSocket and developed interactive market charts.
- Optimized SEO and web performance for high-traffic environments to ensure stability.

### Silkrode Technology | Frontend Developer
*April 2020 – August 2021*

- **Video Streaming**: Built a streaming platform from scratch using Vue.js, video.js, and HTTP Live Streaming (HLS/m3u8).
- **Exchange Platform**: Developed a crypto exchange platform using React.js, WebSocket, and GraphQL (Apollo Client).
- **Chat Room**: Developed a high-performance chat room using MQTT/WebSocket with Intersection Observer for load-on-demand optimization.

### Previous Experience
- **LOONGAMING-NET. Technology (2019 - 2020)**: Developed web-based slot games using Cocos Creator and TypeScript; automated asset slicing with Python scripts.
- **Dayu Software (2018 - 2019)**: Created 2-player competitive games using Unity (C#) and Cocos Creator; built company official websites using HTML/SCSS/Gulp.

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## Education

- **National Taipei University (NTPU)** | Bachelor of Public Finance

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## Key Achievements & Projects

- **Promoted to Team Owner** at Gate.io within 1 month.
- **AI CR Tool**: 80% efficiency improvement and 20% more optimizable code identified.
- **Payment Optimization**: 50% reduction in processing time through Web3 wallet automation.
- **Next.js Migration**: 20% increase in overall Lighthouse scores for major fintech projects.
- **Open Source**: Maintainer of JS30, Data Structure & Algorithms in JS, and Advanced JS notes.

Experience: 7 years

Yearly salary: $70,000

Hourly rate: $35

Nationality: 🇹🇼 Taiwan

Residency: 🇹🇼 Taiwan

Experience

Senior Frontend developer

Bitrue

2024 - 2026

AI Code Review Tool: Designed and implemented a containerized AI CR tool using Docker, LlamaIndex, Dify, and Claude to streamline CI/CD workflows. MCP Server & RAG: Developed a Python-based MCP (Model Context Protocol) server for GitLab/local agents and established a knowledge base using Dify for RAG-driven code analysis. 80% Efficiency Gain: Improved code review efficiency by 80% and identified 20% more optimizable code via automated LLM prompts. DEX Project: Independently implemented copy trading and deposit/withdrawal modules for a decentralized exchange using GraphQL for optimized data fetching. Localization: Integrated Strapi with GPT-4o for one-step multi-language translation, reducing manual efforts by 80%.

Frontend developer

Gate.io

2022 - 2024

● Feedback from my Product Manager 1. Reliable, conscientious, and responsible. 2. Meets deadlines and works independently. 3. Communicates issues in time; collaborated well with UIUX designer, PM, backend developer and QA in the team. ● Promotion to Payment Team Owner 1. Created various pages and hooks with React.js and TypeScript, including trading competition activity pages with colleagues remotely. Primarily worked as a solo front-end developer. 2. Promoted to Payment Team Owner within one month after joining the company. 3. Debugging with the devtool or webview and writing unit test with Jest. 4. Using SonarQube to control frontend code quality; using Sentry to record frontend error logs. ● Development of Cashier Project 1. Developed a cashier project that supports multiple cryptocurrency payment methods. 2. Integrated a web3 wallet transfer feature, like calling MetaMask or WallerConnect with Ethers.js or Web3.js, allowing users to transfer funds without entering the amount or address.It reduced payment processing time by 50%. ● Development of Web Payment Project 1. Implemented an optional passwordless low-risk payment feature for the payment project and increased user adoption rate by 80%. 2. Developed a responsive and compatible H5 cryptocurrency payment website on my own that was able to be accessed by third-party applications. ● Development of Gift Card Project and Backstage 1. Developed a financial management backstage for cryptocurrency payments and Gift Card from scratch on my own, utilizing React.js and micro-frontend technology. 2. Migrated the Gift Card project from React.js micro-frontend architecture to Next.js monorepo architecture. 3. Utilized Next.js to improve first-screen rendering and overall user experience. Achieved an overall 20% increase in Lighthouse scores. ● Developed MiniApp and GatePay landing pages 1. Created MiniApp and GatePay landing pages to showcase and promote cryptocurrency payment services 2. Provide users with information about and access to cryptocurrency payment services.

Frontend develop

LH Network Service Ltd.

2021 - 2022

● Developed responsive financial trading website and corporate official website using Next.js, meeting requirements and ensuring timely launch without delay. ● Integrated real-time market data using WebSocket and developed market charts with colleagues. ● Developed transaction records page, user favorites page, and discount coupon page. ● Built Q&A forum and message board with infinite scrolling functions. ● Optimized and focused on SEO and performance enhancement.

Frontend develop

Silkrode Technology Co., Ltd.

2020 - 2021

● Video Streaming Platform 1. Collaborated with two front-end developers to build a video streaming platform from scratch in three months. 2. Developed the homepage, chat room, video, and short film pages, and implemented video streaming using video.js and HTTP Live Streaming (HLS) in m3u8 format. Used Vue.js for website components and implemented meta tags for Matomo user behavior tracking. Also developed the admin backstage using Vue.js and MQTT protocol. ● Cryptocurrency Exchange Platform 1. Collaborated with multiple developers to build a cryptocurrency exchange platform from scratch in two months. Used React.js, Websocket, GraphQL, and Apollo Client for API integration. 2. Independently developed the homepage, trading page, wallet page, record page, exchange page, and chat room. 3. On the management platform, independently developed user management and a chat room, and partially developed content management, trading, and currency management. ● Chat Room 1. Developed a chat room using MQTT and WebSocket protocols for communication. 2. Implemented load-on-demand optimization using IntersectionObserver, controlled maximum message limit, and developed local cache to save performance. 3. Developed image slideshow using promise.all to obtain all images and inserted images into the slideshow component after confirmation.

Frontend developer

LOONGAMING-NET. Technology

2019 - 2020

● Developed and maintained multiple slot games on the web with a small team of two members, using Cocos Creator and TypeScript. ● Automated and streamlined the process of slicing and creating various game assets with Python scripts. ● Deployed slot games on a testing environment, using Jenkins and Shell scripts.

Frontend developer

Dayu Software

2018 - 2019

● Developed multiple 2-player competitive games using Unity and C#, with WebSocket integration. ● Developed multiple 2-player competitive games using Cocos and TypeScript, with WebSocket integration. ● Independently created the company's official website and game lobby, without using any framework, using HTML, SCSS, and Gulp.

Skills

front-end

javascript

nextjs

react

english

chinese-mandarin

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